diff --git a/runtime/react/page/App.tsx b/runtime/react/page/App.tsx
index 668d5798..0fb1a221 100644
--- a/runtime/react/page/App.tsx
+++ b/runtime/react/page/App.tsx
@@ -19,7 +19,7 @@
 import React, { useContext, useState } from 'react';
 import { cloneDeep } from 'lodash-es';
 
-import Core from '@tmagic/core';
+import type Core from '@tmagic/core';
 import type { ChangeEvent } from '@tmagic/data-source';
 import type { MNode } from '@tmagic/schema';
 import { AppContent } from '@tmagic/ui-react';
diff --git a/runtime/react/playground/App.tsx b/runtime/react/playground/App.tsx
index bde5a17c..c533caf7 100644
--- a/runtime/react/playground/App.tsx
+++ b/runtime/react/playground/App.tsx
@@ -18,7 +18,7 @@
 
 import React, { useContext } from 'react';
 
-import Core from '@tmagic/core';
+import type Core from '@tmagic/core';
 import type { MPage } from '@tmagic/schema';
 import { AppContent } from '@tmagic/ui-react';
 
diff --git a/runtime/vue2/page/App.vue b/runtime/vue2/page/App.vue
index fef89ecc..35938684 100644
--- a/runtime/vue2/page/App.vue
+++ b/runtime/vue2/page/App.vue
@@ -6,7 +6,7 @@
 import { defineComponent, inject } from 'vue';
 
 import type { Page } from '@tmagic/core';
-import Core from '@tmagic/core';
+import type Core from '@tmagic/core';
 import { addParamToUrl } from '@tmagic/utils';
 import { useDsl } from '@tmagic/vue-runtime-help';
 
diff --git a/runtime/vue2/playground/App.vue b/runtime/vue2/playground/App.vue
index 691b6477..c26ca3e0 100644
--- a/runtime/vue2/playground/App.vue
+++ b/runtime/vue2/playground/App.vue
@@ -5,6 +5,7 @@
 <script lang="ts">
 import { defineComponent, inject } from 'vue';
 
+import type Core from '@tmagic/core';
 import { useEditorDsl } from '@tmagic/vue-runtime-help';
 
 export default defineComponent({
diff --git a/runtime/vue3/page/App.vue b/runtime/vue3/page/App.vue
index f14677d1..afef20e0 100644
--- a/runtime/vue3/page/App.vue
+++ b/runtime/vue3/page/App.vue
@@ -6,7 +6,7 @@
 import { inject } from 'vue';
 
 import type { Page } from '@tmagic/core';
-import Core from '@tmagic/core';
+import type Core from '@tmagic/core';
 import { addParamToUrl } from '@tmagic/utils';
 import { useDsl } from '@tmagic/vue-runtime-help';
 
diff --git a/runtime/vue3/playground/App.vue b/runtime/vue3/playground/App.vue
index 95e54ca5..869b8da7 100644
--- a/runtime/vue3/playground/App.vue
+++ b/runtime/vue3/playground/App.vue
@@ -5,6 +5,7 @@
 <script lang="ts" setup>
 import { inject } from 'vue';
 
+import type Core from '@tmagic/core';
 import { useEditorDsl } from '@tmagic/vue-runtime-help';
 
 const app = inject<Core | undefined>('app');